Viscosity index improver of catalytic modified ethylene propylene copolymer and preparation method thereof

A technology for viscosity index improvement and ethylene-propylene copolymer, which is applied in the field of catalytically modified ethylene-propylene copolymer viscosity index improver and its preparation, and can solve problems such as being only applicable, unable to meet higher requirements, and unreachable

Inactive Publication Date: 2010-01-20
赵仲东 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Existing OCPVII industrial products at home and abroad, the SSI of the diesel nozzle method is difficult to achieve below 20%, not only cannot meet the new and higher requirements of OCPVII products in some countries, but also greatly restricts the scope of application of OCPVII. Applied in the field of traditional internal combustion engine oil
For lubricating oil fields such as low-temperature hydraulic oil and high-grade gear oil, because they require less than 10% of the SSI of the OCPVII diesel nozzle method, the existing OCPVII obviously cannot meet such requirements

Method used

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  • Viscosity index improver of catalytic modified ethylene propylene copolymer and preparation method thereof
  • Viscosity index improver of catalytic modified ethylene propylene copolymer and preparation method thereof
  • Viscosity index improver of catalytic modified ethylene propylene copolymer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 1. Add a certain amount and a certain proportion of base oil into the above reaction kettle, heat the base oil to 90°C under stirring, add ethylene-propylene rubber cut into small pieces from the feeding port, and at the same time, let the air flow through it. The input volume is 1000ml / min. Continuously raise the temperature to dissolve the ethylene-propylene rubber in the base oil.

[0045] 2. After the heat melting is over, add a certain amount of catalyst VTR-6 when the temperature rises to 140°C, and continue to heat up.

[0046] 3. When the temperature rises to 150°C, air is introduced from the bottom coil of the kettle to carry out catalytic thermal oxidation degradation, and the air intake rate is 3000ml / min. After calculation for about 3 hours, sampling and analysis, when the viscosity of the tested sample reaches the central control index, the reaction is terminated, the base oil is added for calculation, and the temperature is lowered to 120°C to filter and ...

Embodiment 2

[0050] 1. Add a certain amount and a certain ratio of base oil into the above reaction kettle, heat the base oil to 110°C under stirring, add ethylene-propylene rubber cut into small pieces from the feeding port, and at the same time, let in air, and the air will The input volume is 1200ml / min. Continuously raise the temperature to dissolve the ethylene-propylene rubber in the base oil.

[0051] 2. When the heat melting is over, add a certain amount of catalyst VTR-6 when the temperature rises to 150°C, and continue to heat up.

[0052] 3. When the temperature rises to 180°C, air is introduced from the bottom coil of the kettle to carry out catalytic thermal oxidation degradation, and the air intake rate is 3000ml / min. After calculation for about 3 hours, sampling and analysis, when the viscosity of the tested sample reaches the central control index, the reaction is terminated, the base oil is added for calculation, and the temperature is lowered to 120°C to filter and disch...

Embodiment 3

[0056] 1. Add a certain amount and a certain proportion of base oil into the above reaction kettle, heat the base oil to 80°C under stirring, add ethylene propylene rubber cut into small pieces from the feeding port, and at the same time, nitrogen gas is introduced, and the gas is ventilated. The input volume is 1300ml / min. Continuously raise the temperature to dissolve the ethylene-propylene rubber in the base oil.

[0057] 2. After the thermal melting is over, when the temperature rises to 180°C-195°C, add a certain amount of catalyst VTR-6 in batches, and continue to heat up.

[0058] 3. When the temperature rises to 200°C, air is introduced from the bottom coil of the kettle to carry out catalytic thermal oxidation degradation, and the air intake rate is 3000ml / min. After calculation for about 5 hours, sampling and analysis, when the viscosity of the tested sample reaches the central control index, the reaction is terminated, the base oil is added for calculation, and the...

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Abstract

The invention relates to a viscosity index improver of a catalytic modified ethylene propylene copolymer and a preparation method thereof. The method adopts a whole set of catalytic modified thermal oxidative degradation technique and effectively controls the deep degradation and modification of a high molecular ethylene-propylene copolymer in base oil. The content of the ethylene propylene copolymer in the catalytic modified OCP VII is 8-35%, and the balance is the base oil. The molecular weight of a product has uniform distribution, the molecular structure is accompanied by a product with relatively less macromolecule oxidizing degree of 2-5%, the shearing stability index (SSI) obtained by a diesel oil spray nozzle test method is 2-25%, the thickening capability is 5.0-9.5, the product has the coagulation lowering function of 3-5 degrees, and the application range of the OCP VII is expanded from the original internal combustion engine oil to the fields of low-temperature hydraulic oil and high-grade gear oil.

Description

technical field [0001] The invention relates to a viscosity index improver and a preparation method thereof, specifically to a catalytically modified ethylene-propylene copolymer viscosity index improver and a preparation method thereof. The catalytically modified ethylene-propylene copolymer viscosity index improver can not only meet domestic and foreign The development of internal combustion engine oil requires viscosity index improvers, and it breaks through the limit that ethylene propylene copolymer viscosity index improvers can only be used in internal combustion engine oils, and can be applied to low-temperature hydraulic oils and high-grade gear oils. Background technique [0002] Viscosity Index Improver (VII for short) is a kind of lubricating oil additive. Its function is to improve the viscosity-temperature performance of lubricating oil, balance high and low temperature viscosity, bring good low-temperature startability to the engine, and turn single-grade oil i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M165/00C08F210/16C08F8/50C10N30/02C10N40/08C10N40/04
Inventor 赵仲东赵熳周培森
Owner 赵仲东
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